The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 27, 1994
Filed:
Dec. 01, 1992
Naoto Inaba, Tokyo, JP;
Shinichi Tanaka, Kamakura, JP;
Nikon Corporation, Tokyo, JP;
Abstract
A binary threshold value setting circuit comprises: a first detecting section to detect the positive polarity side of an input signal, a second detecting section to detect the negative polarity side of the signal; a first envelope detecting section to perform an envelope detection to the signal detected by the first detecting section, a second envelope detecting section to perform an envelope detection to the signal detected by the second detecting section, a threshold value setting section to generate a signal at a level between the level of the signal which has been envelope detected by the first envelope detecting section and the level of the signal which has been envelope detected by the second envelope detecting section, and a capacitor connected between the output side of the first detecting section and the output side of the second detecting section.